I need to change my ip address i have already tried the command renew and release but everytime i renew?

Question

i get the same ip address back. i have a cable modem. please let me know how i can change my ip address.

Answer 1

You probably can't change your IP address then. Many cable systems will repeatedly give you the same IP address every time. The reason that you continuously get the same IP address is because the ISP keeps a record of IP addresses by MAC address of all the computers on the network. This is called a DHCP database. When you release and renew, the first thing your computer does is to ask the DHCP server if it can reuse the same IP address it had previously. The DHCP server checks the IP and MAC association and if it's the same it essentially says, "Sure, go ahead and keep the same IP." You can release and renew all night long and you'll never get a new IP.



You MIGHT be able to force it to change by installing a new NIC in your machine. Each NIC has a unique MAC address so this might force a change. Most systems record the PC or router's MAC address but a few record the MAC address of the cable modem. If your cable system is one of those, you'll get the same address regardless of the NIC in your PC.



Why do you need to change your IP address? Normally there's no good reason for doing this. If you've done something that you shouldn't have, changing your IP isn't going to help you as the ISP has a complete record of all IP addresses and when and to whom they were issued. If you are being attacked from the internet, contact your ISP for instructions. Most of the time there's nothing that you can do realistically aside from making sure your firewall is running.

Answer 2

Wow... everyone has been pretty much wrong. The worst of all, however, has to be the "your modem is a router" guy. I'm sorry, dude, but you're completely wrong. A modem is not a router; although it provides traffic forwarding, it's a modulator-demodulator. Comparing a modem to a router is like comparing an oven to a cakepan; the first one can only make the cake, the second one can only deliver it. Modems are responsible for converting the traffic into a more readable format and, although cable modems do not function the same way as traditional modems, they do still serve the traffic in this manner. Your modem will NOT have a routing table because it's not routing anything; if it was routing something, then the modem and computer would have different IP addresses, which they don't. Your computer initiates a DHCP request, which exits through your NIC through your modem to the ISP; the reply comes from the ISP back through the modem to your computer. Your modem does not need an IP address.



Phew. On to the question. Everyone who said "you have to call your ISP" gets half a cookie. Depending on how your ISP handles their DHCP lease cycle, your IP address is likely to change on a regular interval; this is usually 7 to 14 days, although it can be much longer. If you can't wait that long, you'll have to call your ISP and get them to change your IP address.



Of course, I have to concur with the person that asked WHY you need to change your IP address. If it is concerning inbound attacks on your computer, then just call your ISP and explain that. Otherwise, your reason is probably either wrong or ill-founded. If it is because of a perceived "requirement" for anything, then it's just wrong. If it is because of possibly borderline-legal or illegal activities, then it's ill-founded and I can't give you any advice because my morals keep me from doing so. Why would that make it ill-founded? Because if you're naive enough to leave tracks, you deserve to be caught.

Answer 3

First, Are you trying to change the IP address of your local machine, or the Cable modem? If it's the cable modem, you may need to access it via your web browser. Call your ISP for details. If it's your computer, you could just manually set it. Go into your control panel, select Network connections. Right click on the network card that you are using, and give your self a manual IP address. Make sure that it is on the same IP block that the assigned IP was. Make sure to disable DHCP on the modem to remove possible conflicts

Answer 4

I heard disconnecting the modem for 24 hours will completely renew your IP address... but I've never been willing to wait this long!

Answer 5

if you have a cable modem, it is most probable you got a static ip address, one that cannot be changed by you. there is a program called ip changer which will change hide your ip and give you another one. hope this helps. what you could also do is try disconnecting your modem for a few seconds and then connect back again, if you get the same ip adress, then you got a static ip. look for the ip changer instead

Answer 6

Releasing and renewing will only affect your internal IP address assigned to you from your router. You generally need to contact your ISP to obtain a new external IP address.

Answer 7

Are you trying to change it to something specific, or just change it to something else?



Depending on your ISP, you may not be able to simply change your IP address by release/renew. You may be able to use a free proxy server depending on what your trying to accomplish.



If your needing to manually set your IP address, you can do that in Network Connections -> Properties (of the connection your changing) -> Internet Protocol (TCP/IP) -> Properties

Answer 8

your modem is also a router. it has a routing table in it. unplug the modem. plug it back in and the routing table should reset. the routing table is associating your MAC address with an IP address. without unplugging the modem, the modem will always associate your MAC with the same IP. the MAC never changes so as long as the router never loses it's table, the IP will never change.

Answer 9

As a tenet, try utilising a different channel to your community, one that is critically different out of your contemporary one (ie. decide on a different team from Channels a million-3, 4-6, 7-11... in case you're channel 2 ideal now, for occasion, try a channel from one in each and every of the different communities). there's a threat which you're actually experiencing interference on your contemporary channel, and the laptop's wireless adapter is the main susceptible. additionally, please record the makes and fashions of the different wireless adapters you're utilising interior the laptop and the pc, besides as a results of fact the kind of the instant router.

Answer 10

try removing your network adapter from the device manager then reinstall the drivers again.